A novel approach for the synthesis of highly active ZnO/TiO2/Ag2O nanocomposite and its photocatalytic applications

The present work is focused on the preparation of hybrid ZnO/TiO2/Ag2O nanocomposite for enhanced photocatalytic activity. The resultant samples are characterized by using XRD, SEM, EDX, HR-TEM, UV-DRS, BET and XPS techniques. X-ray diffraction analysis indicates the co-existence of wurtzite, anatas...

Full description

Saved in:
Bibliographic Details
Published in:Ceramics international 2015-09, Vol.41 (8), p.9671-9679
Main Authors: Kalpana, Kalyanaraman, Selvaraj, Vaithilingam
Format: Article
Language:English
Subjects:
Methylene blue
Photocatalytic
Photodegradation
ZnO/TiO2/Ag2O nanocomposite
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The present work is focused on the preparation of hybrid ZnO/TiO2/Ag2O nanocomposite for enhanced photocatalytic activity. The resultant samples are characterized by using XRD, SEM, EDX, HR-TEM, UV-DRS, BET and XPS techniques. X-ray diffraction analysis indicates the co-existence of wurtzite, anatase and cubic phases in ZnO/TiO2/Ag2O nanocomposite. The band gap energy value of the photocatalyst is 3.39eV, which has been evidenced from UV–visible diffuse reflectance spectroscopy measurements. Photocatalytic degradation of methylene blue dye has been investigated by using UV–visible spectrophotometer. From the result, it has been concluded that ZnO/TiO2/Ag2O nanocomposite has proven to be an efficient photocatalyst under UV irradiation when compared to that of mono and binary oxide systems. Further, the possible photodegradation mechanism is proposed to support the enhancement of photocatalytic activity towards degradation of dyes.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2015.04.035